Manufacturing of Al/SiC p composite foams using calcium carbonate as foaming agent

J Braz. Soc. Mech. Sci. Eng.

2020

Aluminum foams are one of the best energy absorber materials for various impact protection applications; such as lightweight structural panels, packing materials, and energy-absorbing devices. In the present study, the hot deformation behavior of closed-cell Al/SiCp composite foams was investigated at different contents of SiC particles (3, 6, and 10 vol%) and at various temperatures (100, 200, 300, and 400 °C). High-temperature uniaxial compression tests with constant 0.1 s−1 strain rate were carried out to get the fundamental stress–strain profiles. The results showed that the yield strength, plateau stress, and energy absorption of composite foams increase with increase in the SiC content and decrease with increase in the deformation temperature. Mechanical properties and electron microscope photographs demonstrated that increase in the SiC particle contents, as microstructural obstacles, resulted in cell’s walls reinforcement against the early failure especially at the higher temperatures.

Section: Methodsmentioning

confidence: 99%

Effect of SiC particles on hot deformation behavior of closed-cell Al/SiCp composite foams

Dehnavi

Ebrahimi

J Braz. Soc. Mech. Sci. Eng.

2020

“…The detail of the composites is appeared elsewhere. 25 The cores were cut into 120 Â 120 mm blocks with 10, 20 and 30 mm thicknesses. Face-sheets were bonded to the core material using Akfix 610 polyurethane base adhesive.…”

Section: Materials and Propertiesmentioning

confidence: 99%

High-velocity perforation behaviour of sandwich panels with Al/SiC_p composite foam core

Journal of Composite Materials

Babakhani

Zebarjad

2019

Self Cite

Aluminium foam core sandwich panels are good energy absorbers for impact protection applications, such as light-weight structural panels, packing materials and energy absorbing devices. In this study, the high-velocity perforation response of a range of sandwich panels with Al A356/SiCp composite foam core and 1100 aluminium face-sheets has been investigated using a conventional gas gun. Impact perforation tests were carried out using a 10-mm diameter conical nosed indenter at velocities up to that required to achieve complete perforation of the target (i.e. 230 m/s). The effects of face-sheet thickness, density and thickness of aluminium composite foam core on the total, specific and extra absorbed energy and also ballistic limit of the panels during impact penetration were experimentally investigated. During test, top face-sheets globally bended and tore into several pieces and so absorbed part of impact energy. Rupture and densification are two deformation modes and energy absorption mechanisms of foam core. Localized indentation and tearing, global bending and delamination were also observed on back face-sheets. Higher foam core density and thickness and also thicker face-sheets resulted in higher absorbed energy and ballistic limit.

“…The face-sheets were made of Al-1100 and had 0.6, 1.0 and 2.0-mm thicknesses. The ACECR 22 closed-cell A356 aluminium alloy foam cores with a 0.6 g cm −3 constant density were cut into 120 mm × 120 mm blocks with 10, 20 and 30-mm thicknesses. The face-sheets were glued onto the surfaces 1 a Preparation procedure of the sandwich panels and b a produced sandwich panel with its different parts of the core using Akfix 610 polyurethane base adhesive.…”

Section: Experiments Materials and Propertiesmentioning

confidence: 99%

Modelling of aluminium foam core sandwich panels under impact perforation

Babakhani

Materials Science and Technology

Zebarjad

2016